operators_manual

dryer replacement should be made with an
identical component.
WARNING!
Use of an air dryer brand or model that dif-
fers from what was originally installed could
cause the air system to not perform correct-
ly unless the full air system design is re-
viewed and modifications are made to com-
ply with Federal Motor Vehicle Safety Stand-
ard (FMVSS) 121 Air Brake Systems. Fail-
ure to abide by this warning and maintain
compliance with FMVSS 121 could cause
loss of vehicle control and may lead to
death or serious personal injury.
The AD-IS Series air dryer has
incorporated into its design various
components that have typically been
installed separately on the vehicle (see
below for components/areas affected):
• Pressure protection valves
• Safety valve
• Governor and plumbing
• Plumbing of the front and rear
service air tanks
• Plumbing to accessory systems
These components are required to meet
the Federal Motor Vehicle Safety
Standards (FMVSS 121 - Air Brake
Systems). As the Warning above states,
any other type of air dryer installed in the
place of an AD-IS Series will require
changes, modifications and/or additions to
your vehicle’s air system to maintain
compliance with FMVSS 121.
Air Tanks
Air tanks on the vehicle act as a reservior
for the air system to use without running
the air compressor all of the time. These
air tanks require maintenance to keep
them operational.
WARNING!
If the supply and service air tanks are not
drained at the recommended frequency, wa-
ter could enter the air lines and valves. This
could cause corrosion or blockage, which
could compromise the brake system safety
and potentially cause an accident. Failure to
comply may result in death, personal injury,
equipment or property damage.
CAUTION
Do not use penetrating oil, brake fluid, or
wax-based oils in the air system. These flu-
ids may cause severe damage to air system
components.
To eject moisture from the air system
tanks, pull the line that is connected to the
moisture ejection valve. Continue pulling
until the air comes out free of water.
Daily
The supply and service air tanks, must be
drained on a daily basis. Operate air
devices daily to circulate lubricants within
the unit.
MAINTENANCE - Air Tanks
158 Y53-6096-1A1 (01/17)
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